S
M
T
W
T
F
S
30
78°
59°
31
78°
58°
1
81°
55°
2
73°
51°
3
72°
50°
4
72°
52°
5
75°
51°
6
79°
57°
7
80°
58°
8
80°
57°
9
81°
58°
10
81°
57°
11
79°
56°
12
80°
58°
13
81°
58°
14
79°
49°
15
68°
49°
16
69°
52°
17
72°
49°
18
68°
48°
19
69°
43°
20
68°
46°
21
76°
51°
22
76°
52°
23
75°
42°
24
69°
43°
25
69°
45°
26
72°
51°
27
73°
51°
28
73°
44°
29
65°
40°
30
64°
41°
1
64°
46°
2
71°
44°
3
72°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Grove City
Grove City's September 2026 forecast shows daily high temperatures ranging from 64° to 81°, with overnight lows between 40° and 59°. The average high for September is 74° with an average low of 51°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Grove City. See also: October | November | December.
